Answer:
Option A:
is the correct answer.
Step-by-step explanation:
Given that:
Slope of the line = 
Let,
m be the slope of the line perpendicular to the line with slope 
We know that,
The product of slopes of two perpendicular lines is equals to -1.
Therefore,

Multiplying both sides by 

m = 
is the slope of the line perpendicular to the line having slope
Hence,
Option A:
is the correct answer.
-10p+9=12
-9 -9
-10p=3
—— —
-10 -10
P=3/-10 or -0.3
Answer:
I'm sorry i think u forgot to add the image
Step-by-step explanation:
Answer:
-1/3
Step-by-step explanation:
Taking two points on the graph (I took (0,9) and (6,7)
Slope=(y2-y1)/(x2-x1)
(7-9)/(6-0)=-2/6
=-1/3
You only need to know one side, you can use , tan, sin, or cos of the angles to find the other 2 sides.